Agatha Christies Diamonds

When the contents of Agatha Christie’s former home were put up for sale, a battered canvas trunk was among the more affordable lots.
The trunk sold for £100 to Jennifer Grant, a Christie enthusiast, who was puzzled to discover it contained a locked strongbox with no key.
For four years, the contents remained a mystery. Then, in 2010, Miss Grant asked a builder working on her home to prise open the metal box with a crowbar.